» On the type plate in the revision cover
» If you have a TCX control unit (touch control unit), it is not necessary to open the device. In this case, you will also find the serial number in the system menu

Please carry out the following checks step by step.

1. Check whether the fuse in the fuse box is switched on.
   » Switch on the fuse
2. Check whether the main switch (optional extra) in the device is switched on.
   » Switch on the main switch
3. Check whether the control panel is switched on (touch control panels only).
   » Press the on/off button on the control panel
4. Check whether a fault is displayed on the control panel (touch control panels only).
   » Acknowledge the fault
   » Inform the installer about the fault
5. Check whether the devices have the authorisation (BMS) to run.
   » Have the release issued
6. Check whether the devices are in automatic mode and automatic contacts (e.g. door contact) are not connected
   » Temporarily change to manual mode and check whether the device is running
   » If not, inform the installer
7. Check whether a timer is stored
   » Adjust the timer so that the device is activated

Please carry out the following checks step by step.

1. Check whether the central heating in the building is switched on.
   » Switch on the heating and open the valves
2. Check whether the Air Curtain is operating in winter mode.
   » Change the setting from summer to winter mode.
3. Check whether the target air discharge temperature is too low (touch control panel only).
   » Increase the target air discharge temperature.
4. Check whether the heat output is set too low (electric door air curtain only).
   » Increase the heat output. Caution: The heating level can correspond to the maximum fan level.
5. Check whether the flow temperature at the air curtain is too low.
   » Contact the installer.

Often occurs at the beginning of the heating period, caused by soiling of the heating coil during the summer period when the heating coil was not used.

» Switch off the device and wait until the heating coil has cooled down
» Clean the heating coil and air intake grille with a vacuum cleaner or compressed air

1. Check whether the filter is dirty or blocked.
   » Check, clean or replace the filter.
2. Check whether the fan speed is set correctly.
   » Adjust the fan speed on the control panel.
3. Check whether the air outlet system is set correctly
   » Change the setting of the air outlet system, this should aim at the doorstep
   » Rotate the Convergo air outlet nozzle by 180° if it is misaligned (see operating instructions for more information)
4. Check whether fans are running properly
   » Contact installer